Improved nail-machine



M.M01VIANUS. NAIL MAGHINE.

Np. 43,324. Patented June 28, 1864.

- UNITED STATES PATENT OFFICE.

MICHAEL MCMANUS, OF BROOKLYN, NEW YORK.

IMPROVED NAIL-MACHINE.

Spcciiication forming part of Letters Patent No. 113,324. dated June 2S, 1864.

To all whom it may concern:

l Beit known that I, MICHAEL McMANUs,or the city of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Machinery for` Forging Nails and other Articles; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specication, in which- 1 Figure 1 is a plan of a machine. Fig. 2 is a front View of the same. Fig. 3 is a transverse vertical section ofthe same in the plane indicated by the line x fr, Fig. 1. Fig. 4 is a back View of the same.

Similar letters of reference indicate like parts. i

This invention relates more particularly to that kind of naillmaehine which is the subject of Letters Patent No. 17 ,941, granted to John M. Hood, as assignee of Samuel J. Seely, butmay be applicable to other nail-machines.

The first part of the invention relates to the apparatus for cutting oft the nails or other articles from the rod or bar.

In Hocds machine, above mentioned, and in other machines, the cutters and the hammers are driven from the same shaft or in such manner that the hammers are in operation while the nails or otherarticles are being cut olf, and there being at that time nothing interposed between the anvil and hammers both are liable to much breakage and injury by the striking of the hammers against the anvil.

The object of this part of the invention is to remedy this evil 5 and to this end it consists in operating the cutting-off mechanism independently of the rest of the machine by a separate drivingbelt, so that before the nail o1 work is removed from between the anvil an hammers to be cut off the action of the hammers may be stopped while the cutter or cut-- ters still remain in operation.

It also consists in the application to the shaft which gives motion to the hammers, of a friction-brake which is thrown out of operation by means of the lever which carries a tightening-pulley for tightening a belt whichdrives the said shaft when the said tightening-pulley is brought into operation to start 'the hammersand which is allowed by the said rever to be brought into operation by a spring to stop the machine when the said pulley isthrown out of operation.

Another part of the invention consists in a novel mode of applying a gage in combination with the rod-holder for gaging the proper length of rod to form a nail or other article.

A A is the framing of the machine; B, the

oscillating anvil-shafty() C', the osciilating hammer-shafts; and`D.the rotating shaft from which the shafts B C G severally derive motion. These parts are constructed, arranged, and operated substantially as in lIoods machine.

' E is the cutterbar,ito which the movable. cutter is attached, arranged to oscillate upon a fixed pin, b, secured in the back of the front standard, A', of the framing of the machine, and situated a short distance in front ofthe anvil faces ct a. The movable cutter operates in combination with a stationary cutter placed in a stock, M, attached to the standard A, but not shown in the drawings, as it forms no part of my invention and is not necessary to illustrate it.

The cutter-bar E has attached to its lower,

part a sliding lifter, F, (see Fig. 3,) to the bottom'of which there is attached rigidly a slotted piece, c, which receives in its slot the wrist d of a crank,d, attached to the rear end of ashort shaft, e, which works in a socket-bearing, f, secured to the front standard. This shaft has at itsfront end a hand-crank, y, (see Fig. 2,) by which to turn it for the purpose of making the wrist d move the sliding lifter F to bring it within or out of range ot' the short. arm h of the independent lever H, which is fitted to Work freely on the front part of the anvil rock-shaft as upon a. fulcrum. A longer arm of the lever H. is connected by a rod, I, with a crank, J, on a horizontal shaft, K, which is furnished with a pulley, L, to receive rotary motion from a beit separate and distinct from that which drives the shaft D, which imparts motion to the hammers and anvil rock-shaft, thereby making the operation of the cutter-bar C entirely independentv of the hammers and anvil, and permitting the operation of the cutter to be suspended in the interval between the completion of the hammering and drawing out of one nail or other forged article and the rei ntroduction of Athe rod or barto commence the forging of another, during which interval the cutting ofi is effected.

The operation of the shaft K and lever H is perfectly continuous, but during the operation of the hammers the sliding lifter F is drawn sary upward movement of the cutter-bar to cut on" the nail or other article.

The shaft D, from which the other parts of the machine derive motiomreeeives its motion from a belt through a pulley, D', on its rear end, and this belt runs slack, except .when tightened bv the pressure of the tighteningpillley N, which is attached to a lever, O, c: rried by a horizontal r )ck shaft, O', which` works in bearings in the lower part of the framing. 0n the front end of this rock-shaft, in the front of the framing, there a treadle, 02, uponwhich the operator, standing in front of the machine, presses his foot to bring and keep the tighteningpulley against the belt, and so make it drive the pulley D' and shaft D.. .Vhen the operator removes his foot from the treadle, the belt becomes slack and ceases to drive the pulley D', but as the shaft would still continue to run by the momentum acquired by its connected parts were not some means of stopping it provided, I apply to the pulley D' a friction-brake lever, R, which is brought into action by a spiral spring, R'. l(See Fig. 4.) This brake works upon the end of the shaft B, or on one of the center-screws, which holds the same in place. A pin, l, attached t0 the lever O, is so arranged that when the said lever is brought into a position to bring the tightening-pulley into operation, it (the pin l) comes into action upon the brakelever R and lifts it from the pulley D', but that when the said lever O is allowed to fall back to throw the tightening-pulley out of operation it (the pin l) passes out of contact with the brake lever, and so permits the spring It' to bring it into operation and at once stop the pulley.

S is the rod-holder,in which the rod m is held during the forging and cutting-oh' operations. This holder is of Well-known construction, and slides through an openiugin the standardA'. By the side oi' and parallel with the said holder there is arranged a horizontal shaft, T, Which turns freely in a long tubular bearing, T', secured to the standard A, and to this shaft, on the inner side of the standard A', there is attached by an arm, u, a gage plate, n', which serves to gage the proper length of rod or bar to make the nail or other article. To the outer end of this shaft there is attacheda crank, p, the weight and arrangement of which are intended to be such that it will hold up the gage-plate out of the Way of the holder, as shown in Fig. 3 in black outline. This crank is so arrai'iged,"as shown in Figs. 1l and 2, relatively to a hook, q', `which is attached to the movable portion or clamp q of the rod-holder that when the said clamp is raised up to liberate the rod or bar the said hook comes in contact with the said crank and moves it upward, thereby de'- pressing the ga ge-arin fn', or gage proper, opposite the holder S. y The opening of the clamp p is effected while the holder S is drawn back against the usual stop, and the gage is arranged at such a distance from the inner end of the holder as to gage exactly the necessary length which the rod or bar is required to be fed forward. lVhen the rod or bar has been fed in, the clamp p is closed, and, in the act of closing the arm q, permits the cran-k p to descend and lift the gage out ofthe Way of the rod or bar m and holder S, to allow them to be moved forward to the proper position relatively to the hammers and anvil for the performance of the forging operation. l

What I claim as my invent-ion, and desire to secure by Letters Patent, isv 1. The combination, with thelever H h and the cutter E, of the sliding lifter F, slotted arm c, and crank d, whereby the cutter is thrown into and out of gear at the will ofthe operator.

2. The friction-brake It and belt-tightening lever O, combined with each other and with lthe hammering or sha-ping mechanism of a forging-machine which has its cutting mechism driven independently, substantially as herein specified.

5. The gage T u n'p, combined with clamp q of the rod-holder, substantially as and for the purpose herein specified.

MICHAEL MCMANUS.

Witnesses:

J. P. HALL, GEO. W. REED. 

